##
Chicago to Saint Looey
Saint Looey to Joplin
Joplin to OKC
OKC to Amarillo
Amarillo to Gallup
Gallup to Flagstaff
Flagstaff to Winona
Winona to Kingman
Kingman to Barstow
Barstow to San Bernandino
San Bernandino to LA
##
##
subsequence(length=>3, step=>1, list=>\@trip);